This unnamed poltergeist has taken up residence inside the Winchester house.
Background[]
At a some point, this poltergeist has taken up residence inside the Winchester house.
He attacked Joe the plumber by mangling his hand in the garbage disposal and trapped Ritchie in the refrigerator when it lured him to its trap while trying to get his juice. Tried to kill Sam and Dean by strangling him to death with a lamp and throwing knives at him respectively. Was wounded by the ritual. Came back and tried to trap Sam inside of the house. Canceled out when Mary Winchester told it to get out of her house.